BE1017843A3 - METHOD AND DEVICE FOR FORMING A FABRIC THROUGH AN ARMOR TOWARDS A WEAVING MACHINE. - Google Patents

Abstract

A method for forming a fabric via back weave in a loom which comprises a shedding device for the warp yarn and a control device which electrically controls the operation of the shedding device comprises: storing a first armor design scheme for armor place; creating a second armor design scheme for upside down armor via a combination of reversal of the first armor design scheme and weave order reversion of the first armor design scheme ; and sending to the armor training device; and sending to the crowd-forming device a crowd-forming command according to the second armor-design scheme to allow the crowd-forming device to perform crowd formation.

Description

METHOD AND DEVICE FOR FORMING A FABRIC THROUGH AN ARMOR TOWARDS A WEAVING

BASIS OF THE INVENTION

The present invention relates to a method for forming a fabric via a backing armor which is implemented in a shedding device having a drive motor for each heald frame whose operation is subjected to asynchronous control with operation. a loom, a dobby loom that electrically controls the switching on and off of the dobby mechanism, or a Jacquard loom that electrically controls the operation of a support needle for each warp yarn. The present invention also relates to a device for forming a fabric via a reverse armor.

A patterned fabric is woven by adjusting the crowd formation according to a pattern of armor design that is created based on a textile pattern so that the pattern of the armor is depicted on the spot cloth woven by a loom. However, the design of the armor at the location of a fabric is likely to become entangled. In addition, a large number of warp yarns are able to move upward during the weaving operation depending on the pattern of the weave, so that the weaving ability related to a loom deteriorates. . In particular, in a loom having heald frames, a large load is applied to the drive motor for a shedding device when a large number of heald frames are subjected to upward movement, which which affects the weaving ability of the loom. To solve this kind of problem, a weaving method is used whereby the pattern of the weave is woven on the surface of a fabric. In the present specification, such weaving is referred to as "armor-back".

In such back armor, a pattern of armor construction is made for the armor location, and the warp threads are threaded through the heald frames according to the armor design pattern for the back armor. In the case of a Jacquard loom, the warp yarns are re-threaded through support needles according to the armor design pattern created for the back armor. However, the warp threading is inconvenient and takes time.

Japanese Patent Application Publication No. 56-96931 discloses a method of perforating a card for a Jacquard loom. According to this method, a ribbon signal for each weft yarn which is produced based on a textile pattern is inverted by 180 ° and the inverted signal is transmitted to a card punch machine which, in turn, perforates a ribbon. Thus, we obtain an inverted drawing without having to make a new textile pattern. At the end of the cited publication, it is indicated that by using a Jacquard card of the inverted weave pattern, the same weave pattern as the non-inverted pattern can be woven onto the fabric surface.

However, a large number of colored yarns are generally used in the jacquard loom and the fabric which is woven using the inverted weave design pattern has on its dorsal surface an inverted weave pattern. Thus, one can not obtain the same weave pattern as that of the weave place via the Jacquard loom of the prior art indicated above. In the case of a reverse armor using the inverted drawing as is the case in the cited publication, the warp threads must be straightened through support needles for the inverted drawing to obtain the same drawing. armor than that of the place. The same problem arises when using an inverted drawing in accordance with the publication cited as a weave design scheme for the electric shedding device comprising heald frames, as well as for the dobby electric loom.

The present invention relates to a method and a device for forming, via a backing armor, a fabric which has the same weave pattern as that which is obtained at the place, in a loom having a weaving device. the electrically controlled crowd for the warp threads, without having to straighten the warp threads.

SUMMARY OF THE INVENTION

A first aspect according to the present invention provides a method for forming a fabric via back weave in a loom which comprises a shedding device for the warp yarn and a control device which electrically controls the operation of the weaving device. formation of the crowd. The method includes: storing a first armor design scheme for armor location; creating a second armor design scheme for reverse armor via a reversal combination of the first armor design pattern and weave order reversion of the first armor design pattern; and sending to the shedding apparatus a crowd forming control according to the second armor design scheme to allow the shedding device to perform a shedding operation.

A second aspect of the present invention provides a device for forming a fabric via back weave in a loom which comprises a shedding device for the warp yarn and a control device which electrically controls the operation of the weaving device. formation of the crowd. The device includes a data input unit that can be operated to enter a first armor design scheme (WP) for armor location; a memory that stores the first armor design scheme; and a processor that is operable to invert the first armor design scheme and revise the weave order of the first armor design scheme to create a second armor design scheme for the armor towards.

Other aspects and other advantages of the invention will become apparent from the following description when taken in conjunction with the accompanying drawings illustrating, in the manner of an example, the principle of the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

The characteristics of the invention which are considered as new are given in a particular way in the appended claims. The invention, together with its objects and with its advantages, will be best understood by reference to the following description of the presently preferred embodiments, together with the accompanying drawings, in which: Figure 1 is a diagrammatic view of an electric shedding device of a first embodiment according to the present invention; Fig. 2 is a screen of a display of the first preferred embodiment according to the present invention, showing a design or armor scheme for armor location; Fig. 3 is a screen of a display of the first preferred embodiment according to the present invention, showing a design or armor scheme for intermediate weave; and Fig. 4 is a screen of a display of the first preferred embodiment according to the present invention, indicating a design or armor scheme for back armor.

DETAILED DESCRIPTION OF THE EMBODIMENTS

PREFERRED

Hereinafter, a first preferred embodiment is described with reference to FIGS. 1 to 4. In the first preferred embodiment, the present invention applies an electric shedding device for a warp yarn. Referring first to FIG. 1, the shedding device includes four stringer frames S1-S4 and their drive motors M1-M4 which are provided on the side of the frame (not shown) of a loom. The drive motors M1 to M4 have rotary shafts 1 to 4, respectively. Control gears 5 to 7 and a drive gear for the rotary shaft 4 (not shown) are attached to one end of the rotary shafts 1 to 4, respectively. Rotary encoders 8 to 11 are mounted at the other end of rotating shafts 1 to 4, respectively.

The shedding device further includes a support shaft 12 which is provided on the side of the loom and four control gears 13 to 16 which are formed in one piece with eccentric wheels 17 to 20 and which are rotatably supported on the support shaft 12. The driven gears 13 to 16 respectively mesh with the control gears 5 to 7 for the motors M1 to M3 and with the drive gear of the drive motor M4 (the control gear being hidden by the driven pinion 16 and not shown). The eccentric wheels 17 to 20 are connected to the heald frames SI to S4 by link devices 21 to 24, respectively. Therefore, when the drive motors M1-M4 are rotated, the heddle frames S1-S4 move vertically under the influence of the motors M1-M4 via the rotary shafts 1-4, the control gears. 5 to 7 and the control gear of the rotary shaft 4, the driven gears 13 to 16, the eccentric wheels 15 to 20 and the link device 21 to 24 for the implementation of a crowd-forming operation in a predetermined manner.

A crowd control device C1 or a computer is connected to the drive motors M1 to M4 and also to the rotary encoders 8 to 11 for controlling the rotation of the drive motors M1 to M4, thereby controlling the operation of the electric crowd-forming device.

A controller C or a computer for controlling the operation of the loom sends a command to start a loom drive motor 25. The controller C includes a ROM (read only memory) for storing therein. various programs for controlling the operation of the loom, a random access memory (RAM) that can be operated to store and rewrite data, and a CPU that can be operated to submit data to operations arithmetic and to send orders. During the operation of the loom, a rotary encoder 26 designed to detect the rotation angle of the loom sends signals representative of the rotational angles in force to the controller C which in turn sends various commands of adjustment for the operation of the loom. The rotation angle signals are sent by the rotary encoder 26 also to the control device of the crowd formation C1. Thus, the electric crowd-forming device is controlled so that its operation proceeds smoothly. synchronous with that of the loom.

Reference numeral 27 denotes a data input unit which includes a keyboard 29 having a card insertion opening 28 for inputting data and a display 30, the unit being connected to the controller C. Various data for the control of the operation of the loom and also various data for a WP armor design scheme as the first armor design scheme as shown in Figure 2 for weave place for the control of the operation of the crowd formation of the crowd-forming electric device is inputted from the data input unit 27 using a card or by hand before being stored in the RAM of the controller C. In FIG. 1, the reference numeral 31 and the reference symbols Y and W designate a flapper comb, a warp yarn which is supported by each heald frame S1 to S4 and a woven fabric, respectively. tively.

Referring to Fig. 2, the armor design scheme WP stored in the controller C is displayed on a screen 32 of the display 30 which acts as a touch screen. On the screen 32, the lateral axis and the vertical axis indicate the respective heald frames Sn (η = 1-8) and the weave return of the weave construction scheme WP, i.e. the order by which the smooth Sn frames (η = 1 to 8) move up or down. It should be noted that the eight heald frames are often used in looms. The number of weave orders is equal to the number of weft insertions.

In the example of Figure 2, a cycle of the WP weave pattern is completed by eight weave orders or eight weft inserts. The weave pattern control mark 33 of the weave pattern WP which is indicated by O denotes a crowd-forming command for upward movement of any of the snowshields Sn (η = 1-8). The armor design control mark 34 of the armor construction scheme WP which is indicated by · designates a crowd formation command for upward movement of any of the sn smooth frames (η = 1-8).

At weave order 1, a shedding control for a downward movement is sent for the SI heddle frame and a shedding control for upward movement is sent for the heald frames S2 to S8. In the same way, at each weaving order, the crowd formation commands are sent for the smooth frames Sn (η = 1 to 8). At the weave order 8, the upward shedding crowd control is sent for the SI heddle frames at S6, the downward shedding drive command is sent for the S7 heald frames and S8, and a cycle of the WP armor design scheme is completed. Next, the WP armor design pattern cycle is repeated to form a weave fabric place so that the weave pattern appears at the woven fabric location on the loom according to the pattern of weave. WP armor design.

On the display 32 of the display 30, scroll buttons 35 for the WP armor design scheme, a button 36 for the armor location and a button 37 for the back armor, as control means. , are displayed in addition to the WP Armor Design Scheme. When pressing the armor button 36 on the spot, the armor design scheme WP is displayed on the screen 32 as can be seen in Figure 2. When pressing the button 37 of the glass armor, the control device for the loom is actuated as follows and a WR2 armor design scheme as the second armor design scheme for the back armor is displayed on the armor. screen 32 as shown in FIG. 4. It should be noted that the WR2 armor design scheme need not necessarily be displayed on the screen 32. A WR1 armor design scheme shown in FIG. an intermediate armor design scheme between the WP armor design scheme and the WR2 armor design scheme and will be hereinafter referred to as the WR1 intermediate armor design scheme.

When pressing the button 37 of the glass armor, a control signal is generated and transmitted to the controller C. The controller C loads and executes a pattern creation program which is stored in the ROM to create the WR2 Armor Design Scheme. The pattern creation program includes the following two steps. The first step is a reversal of the control marks of the armor patterns 33 and 34 so that the marks in question pass to the armor drawing control markers 38 and 39 as indicated by the · and O markers to create the intermediate armor design scheme WR1 as shown in FIG. 3. The second step consists of a reversion of the weave orders 1 to 8 for the Sn smooth frames (n = 1 to 8) to create the design scheme of WR2 armor shown in Figure 4.

In the first preferred embodiment, the weave pattern design reference marks 33 and 34 of the weave design scheme shown in FIG. 2 are inverted in accordance with the pattern creation program as shown. Next, the weave order of the WR1 intermediate armor design scheme is reversioned to create the WR2 armor design scheme shown in FIG. pattern can be modified so that both steps are crossed in reverse order. By such a change, we obtain the same effect.

For purposes of explanation, FIGS. 3 and 4 are illustrated so that the weaving operation is performed after executing the program for all data for a complete cycle for the WP armor design scheme. to get the WR2 armor design scheme. However, the pattern creation program is performed such that the two steps mentioned above are crossed for each weaving order during actual operation of the loom.

More specifically, the pattern creation program is designed such that the creation of an armor design pattern and the subsequent sending of a weave command are performed successively. For example, the WR2 weave pattern of a weave order 1 as shown in Fig. 4 is created and a weave command is sent, then the WR2 weave pattern of a weave order 2 as shown in Figure 4 is created and a weave command is sent, etc.

it should be noted that the WR2 armor design scheme is created so that there are constantly weave design patterns for three weave orders as there is some delay before 1 ' actuating the electric crowd-forming device itself after sending the crowd-control command by the controller C. In the first preferred embodiment, the armor-design pattern created WR2 is stored in memory. temporarily before being removed by a down-counter (not shown).

Hereinafter, the operation of the device of the first preferred embodiment according to the present invention will be described. On the display 30, the button 36 of the armor location has been activated for normal weaving. The controller C sends to the shedding control device C1 a shedding control signal as a function of the WP armor design pattern shown in FIG. receiving the crowd-forming control signal, the crowd-forming controller C1 transmits drive commands to the drive motors M1-M4 and the crowd-forming operation is implemented by each frame of smooth SI to S4.

When it is necessary to weave a fabric whose pattern of armor is likely to become stuck or susceptible to other damage or where a large number of heald frames must be moved up simultaneously during a weaving operation, button 37 of the backing armor is pressed to move from the armor to the back armor. By exerting pressure on the button 37 of the armor upside down, a command to switch armor from place to armor upside down is sent to the controller C.

The controller C loads a program stored in the ROM for the back armor and passes a step for inversion by passing armor drawing control markings 33 and 34 of the WP armor construction scheme. FIG. 3 shows the weave pattern control marks 38 and 39 shown in FIG. 3. In the next step, the weave order of the WR1 weave pattern shown in FIG. Figure 3 is reversioned to create the WR2 armor design scheme shown in Figure 4. The WR2 armor design scheme is temporarily stored in the RAM.

In accordance with the WR2 armor design scheme thus created, the controller C sends a shedding control device to the shedding control device C1 based on the weave command of the order Next, the controller C sends shedding control commands to the shedding control device C1 based on the weaving commands of the following weave orders. A cycle of the armor design scheme is completed once the controller C to send shedding control commands based on the weave order command of the weave order 8. The former control markers Armor drawing of the weaving orders executed 1 and 2 are deleted, since weaving orders for a predetermined number of weave orders are newly created. The weaving continues by repeating such an operation. To stop the armor upside down, press button 36 on the armor to move armor back to armor. As a result, a control signal for the armor location is sent to the controller C and subsequently the weave location is performed.

The first preferred embodiment provides the following advantageous effects.

(1) a fabric having the same weave pattern as that of the woven fabric through a weave place is formed through a back weave with a simple method and a simple device in the absence of a complicated work such as retracting Y-warp yarns through heald frames S1-S4; (2) by pressing the button 37 of the armor upside down on the display 30, a control signal for the back armor is sent to the controller C which, in turn, loads and executes a stored program for a armor upside down. Thus, the operator can initiate the weaving of the armor back without having to do any work or any specific operation; (3) simply by storing in a memory a WP weave design scheme for weave place, one can create WR2 weave design scheme for weave for each weave order. It is not necessary to memorize the armor design diagrams for both the armor and the armor, so that the device is simplified; (4) You can weave a fabric with the same weave pattern by passing through both armor and armor. The WP armor design scheme for the armor location, which is stored in the controller C, is displayed on the screen, and whether or not there is a need for armor-back armor. is determined by the confirmation of the on-screen WP armor design scheme.

Hereinafter, a second preferred embodiment will be described with reference to FIGS. 1 to 4.

The second preferred embodiment differs from the first preferred embodiment in that the method for weave is partially modified. In a practical case, a loom can have as many as sixteen heald frames, or the number of weave orders per cycle or the number of weft insertions can be up to several dozens or hundreds, so that the stored weave design scheme WP can no longer be fully displayed on the display 30.

In contrast to the first preferred embodiment, in which the WP armor design scheme as shown in Figure 2 is confirmed by exerting pressure on the armor button 36 on the spot, the loom is actuated. with the armor front spot of armor upside down. The loom is actuated to weave a sample fabric such as a test fabric for several cycles of the WP armor design scheme before stopping the operation. Since the sample fabric is made via the weave place, the pattern of the weave is shown on the side of the woven fabric, so that one can see the entire pattern of the weave. Consequently, the operator must not carry out additional work such as flipping a cloth to confirm the pattern of the weave and can easily confirm the woven fabric and its weave pattern.

After confirming that the woven fabric under test has the desired weave pattern and after confirming that there are no problems in the woven fabric, the button 37 corresponding to the back weave on the display 30 is depressed and the loom starts. Then, the control device C executes the program for the back weave in a manner similar to the first preferred embodiment, and is obtained via armor to a fabric having the same weave pattern as that obtained by weaving through the weave. armor place.

The second preferred embodiment that takes advantage of the presence of the buttons to move from the armor to the reverse armor and vice versa facilitates the confirmation of the operator regarding the fabric formed from the armor spot, prior to weave through the reverse weave.

The present invention is not limited to the embodiments described above; it may be modified in accordance with various alternative embodiments, as will be explained below by way of example.

(1) in an alternative embodiment, the control device C for the loom can be actuated in response to a control signal for the back armor, which is generated by pressing the button 37 of the back armor so that the full cycle of the WR2 armor design scheme is created. The armor design scheme WR2 thus created is temporarily stored in the RAM and the loom control device C sends a crowd-forming control signal to the crowd-forming control device Cl of the device electric crowd training based on the WR2 memorized armor design scheme. Once the armor has been completed, the WR2 armor design pattern that has been temporarily stored can be deleted; (2) the ROM in which the input armor design schema is stored, the RAM that can be operated to store and rewrite data, and the CPU that can be operated to create the input schema. WR2 weave design for the back weave by reversing the WP weave design scheme and weave order reversion of the WP weave design scheme, all of which are incorporated into the weave device. control C for the loom can be provided in the control device of the crowd formation C1 or in any other additional control device. The data input unit 27 which inputs data for the armor design scheme WP for armor location can be connected to the crowd control device C1 or the additional control device; (3) when the control device C has sufficient memory capacity, the armor design scheme WR2 for the back armor can be permanently stored in the memory of the control device C of the loom; (4) the present invention is applicable to a dobby electric loom and a Jacquard loom, each having an electrically driven shedding device; (5) after forming a predetermined amount of fabric by passing both the armor on and the back armor, the controller C can be actuated to evaluate the fact that the back armor is more desirable than the armor location based on load sensing signals from a load sensor such as a torque sensor or the like which is provided in the warp shedding device. When the controller judges that the backing is more desirable than the armor, the controller C can automatically route the loom to the backing armor.

Accordingly, the examples and embodiments of the present invention should be considered as illustrative and not for restriction purposes; the invention is not limited to the details provided herein and it may be modified within the scope of the appended claims.

Claims (12)

A method of forming a fabric via back weave in a loom which comprises a shedding device for the warp yarn and a control device (Cl) which electrically controls the operation of the shedding device characterized by: storing a first armor design scheme (WP) for armor location; create a second armor design scheme (WR2) for reverse armor via an inversion combination of the first armor design scheme (WP) and reversion of the weave order of the first design pattern of armor (WP); and sending to the shed-forming device a crowd-forming control according to the second armor-design scheme (WR2) to allow the shed-forming device to perform a shed-forming operation. The method of claim 1, wherein the second weave pattern (WR2) is created for each weave order. The method of any of claims 1 and 2, wherein the second armor design scheme (WR2) is created by a command that changes when armor is changed from armor to armor. The method of any one of claims 1 to 3, further characterized by: sending to the shedding device a shedding control according to the first armor design pattern (WP) to form a test fabric; create the second armor construction scheme (WR2) after confirming a weave pattern of the test fabric; and sending to the crowd-forming device the crowd-forming command according to the second armor design pattern (WR2) to form the fabric via reverse armor. The method of any one of claims 1 to 4, further characterized by storing the second created armor design scheme (WR2). Device according to any one of claims 1 to 5, wherein the first weave design scheme (WP) is stored in the control device (C1) or in a control device (C) which controls the operation of the loom. Apparatus for forming a fabric via back weave in a loom which comprises a shedding device for the warp yarn and a control device (Cl) which electrically controls the operation of the shedding device characterized in that a data input unit (27) is operable to enter a first armor design pattern (WP) for armor location; in that a memory stores the first armor design scheme (WP); and in that a processor can be actuated for the inversion of the first armor design scheme (WP) and the reversion of the weave order of the first armor design scheme (WP) to create a second scheme armor design (WR2) for the back armor. 8. Device according to claim 7, wherein the data input unit (27) comprises control means (36, 37) for moving armor from place to armor and vice versa. Apparatus according to claim 8, wherein the data input unit (27) comprises a display (30), the control means (36, 37) representing a button (36, 37) which is displayed on a screen (32) of the display (30). Apparatus according to any one of claims 7 to 9, wherein the data input unit (27) comprises a display (30), the first armor design scheme ((WP)) being displayed on a screen (32) of the display (30). 11. Device according to any one of claims 7 to 10, wherein the memory and the processor are provided in the control device (Cl) or in a control device (C) which controls the operation of the loom. The apparatus of any one of claims 7 to 11, wherein the memory is operable to store the second created armor design scheme (WR2).